PLATINUM
TM
Series Controllers User
’s
Guide
M5451
Omega Engineering | www.omega.com
35
Reference Section: Initialization Mode (INIt)
In many applications a single Gain and Offset as provided by the Scaling adjustment on process inputs
can be used that supports a direct linearization between the input signal and the required reading. For
more complex applications, the relationship between the input value and the desired reading is not
linear across the entire range of inputs. A common example is found when converting a measured
weight of an irregular shaped hopper to the equivalent level.
A 10-point linearization table is provided, allowing for piecewise linearization of complex profiles. This
feature is often used to transform weight values into volume or to transform primary measurements
into derived measurements such as rate of change in temperature to air flow.
The internal process sequentially checks each Point (IN.x) value against the raw input and uses the
associated Gain (GN.x) value to calculate the transfer function.
Combined Scaling/Linearization
The Scaling and 10-point Linearization may be combined. The output of the Scaling adjustment is
applied as the input to the 10-point linearization.
The use of Live Scaling and Live Linearization is mutually exclusive. If Live scaling is selected the Live
Linearization option is disabled and if Live Linearization is selected the Live Scaling option is disabled.
Ptx
Raw Input
Outp
u
t
Val
u
e
Level = Gain
2
X Offset
2
Level = Gain
1
X Offset
1
